1. Junkers, H., German Patent 0 DE310040, 1915.
2. Dean, H.B., US Patent 1389294, 1921.
3. He, M. and Hu, W., Mater. Des., 2008, vol. 29, no. 3, p. 709. https://doi.org/10.1016/j.matdes.2007.03.003
4. Gorev, Yu.A. and Rivkind, V.N., Ross. Khim. Zh., 2009, vol. 53, no. 4, p. 19.
5. Feigenbaum, Yu.M., Butushin, S.V., Bozhevalov, D.G., and Sokolov, Yu.S., Nauch. Vest. GosNII GA, 2015, vol. 7, no. 318.